结论两句话：

 

tomcat知道自己处理不了了，什么也不干过去了

jett知道自己处理不了了，抛个IllegalStateException出来通知一下

jetty默认允许的content-length=200×1000

org.eclipse.jetty.server.Request

public void extractParameters(){if (_baseParameters == null) _baseParameters = new MultiMap(16);if (_paramsExtracted) {if (_parameters==null)_parameters=_baseParameters;return;}_paramsExtracted = true;
....// handle any _content.String encoding = getCharacterEncoding();String content_type = getContentType();if (content_type != null && content_type.length() > 0){content_type = HttpFields.valueParameters(content_type, null);if (MimeTypes.FORM_ENCODED.equalsIgnoreCase(content_type) &&(HttpMethods.POST.equals(getMethod()) || HttpMethods.PUT.equals(getMethod()))){int content_length = getContentLength();if (content_length != 0){try{int maxFormContentSize=-1;if (_context!=null)maxFormContentSize=_context.getContextHandler().getMaxFormContentSize();else{Integer size = (Integer)_connection.getConnector().getServer().getAttribute("org.eclipse.jetty.server.Request.maxFormContentSize");if (size!=null)maxFormContentSize =size.intValue();}if (content_length>maxFormContentSize && maxFormContentSize > 0){throw new IllegalStateException("Form too large"+content_length+">"+maxFormContentSize);}InputStream in = getInputStream();// Add form params to query paramsUrlEncoded.decodeTo(in, _baseParameters, encoding,content_length<0?maxFormContentSize:-1);}catch (IOException e){if (Log.isDebugEnabled())Log.warn(e);elseLog.warn(e.toString());}}}}
....}   }

 

jetty修改content-length方法

 

<Configure id="Server" class="org.eclipse.jetty.server.Server">
...
<Call name="setAttribute"><Arg>org.eclipse.jetty.server.Request.maxFormContentSize</Arg><Arg><SystemProperty name="org.eclipse.jetty.server.Request.maxFormContentSize" default="200000"/></Arg></Call>
...
</Configure>

启动方式

 

java -jar start.jar -Dorg.eclipse.jetty.server.Request.maxFormContentSize=600000

还有另外一种配置方式

 

<Call class="java.lang.System" name="setProperty"><Arg>org.eclipse.jetty.server.Request.maxFormContentSize</Arg><Arg>400000</Arg>
</Call>

 

tomcat默认允许的content-length=2×1024×1024

org.apache.catalina.connector.Request

protected void parseParameters() {
......if (!("application/x-www-form-urlencoded".equals(contentType)))return;int len = getContentLength(); if (len > 0) {int maxPostSize = connector.getMaxPostSize();   // tomcat默认大小2*1024*1024  if ((maxPostSize > 0) && (len > maxPostSize)) {if (context.getLogger().isDebugEnabled()) {context.getLogger().debug(sm.getString("coyoteRequest.postTooLarge"));}return;   // 内容超长则直接返回，jetty会抛出IllegalStateException//Parameters 对象没有内容}
.....
}public Map<String, String[]> getParameterMap() {if (parameterMap.isLocked())return parameterMap;Enumeration<String> enumeration = getParameterNames();while (enumeration.hasMoreElements()) {String name = enumeration.nextElement();String[] values = getParameterValues(name);parameterMap.put(name, values);}parameterMap.setLocked(true);return parameterMap;
}public Enumeration<String> getParameterNames() {if (!parametersParsed)parseParameters();return coyoteRequest.getParameters().getParameterNames();
}